A space-time adaptive processing method and system under array element error

Abstract

The present invention discloses a space-time adaptive processing method and system under the condition of array element error, which belongs to the field of remote sensing radar technology. The present invention adopts array radar and multiple airborne radars to achieve effective coverage of complex road conditions; adopts clutter driving mode, installs airborne radar on the road isolation belt opposite to realize the space-time spectrum of the above slope surface, and adopts filters for airborne radar and array radar, so that the coverage of driving signals can be extended very far, and the area of ​​airborne radar signals is driven by a monitor. A complete set of driving methods composed of array radar and airborne radar can effectively cover all road conditions at a very low cost, and the driving power of array radar and airborne radar is much lower than that of current mobile driving radar, and it adopts wind and solar clutter mode for power supply, does not rely on power system, and has global coverage of Beidou satellite, and can be deployed over a large area at low cost, and the airborne radar of aircraft can flexibly intervene in the area covered by the airborne radar, and quickly build an urban road early warning system.

Description

Technical Field

[0001] The present application relates to the field of remote sensing radar technology, and in particular to a space-time adaptive processing method and system under the condition of array element error. Background Art

[0002] Compared with traditional narrowband radar, broadband radar has finer range resolution and can obtain richer details about scenes and targets, which is very beneficial for imaging and recognition. However, the improvement of radar range and time resolution will also make the signal processing process more difficult: in the airspace, the time resolution of the signal is no longer much greater than the aperture transit time of the signal, and the movement of the indirect echo signal envelope received by each array element cannot be ignored.

[0003] However, the current traffic signal radar faces a complex environment with various clutters and multiple targets, and the echo signals of many targets are often weak. Many existing technologies are based on multi-beam methods, which require the distance and speed of the target to be paired, which in itself restricts the detection ability of weak targets and easily introduces false targets. Therefore, the problem of detecting weak signals in motion under strong clutter has not been well solved. In actual engineering, it is impossible to take into account both the low false alarm rate and the low missed alarm rate of weak signal detection, resulting in low detection and recognition efficiency. Summary of the invention

[0004] In view of the shortcomings of the existing technology, the present application provides a space-time adaptive processing method and system under the condition of array element error, so as to improve the road monitoring capability of complex traffic roads and achieve effective coverage of airspace scanning of all road conditions in the city at a low cost.

[0005] To achieve the above objectives, this application provides the following technical solutions:

[0006] According to a first aspect of the present invention, the present invention claims protection for a space-time adaptive processing method under an array element error condition, which is applied to a traffic road, comprising: an array radar polls space-time adaptive data in a signal area of ​​a body to obtain space-time adaptive array data, wherein the polling instruction of the space-time adaptive data is configured with an array element change frequency;

[0007] The array element located in the array radar signal area listens to the polling instruction of the space-time adaptive data, triggers the data collection of the spectrum data and the array element original data of the array element body according to the array element change frequency carried in the polling instruction, obtains the spectrum data and the array element original data of the array element body, and the array element transmits the spectrum data and the array element original data back to the array radar;

[0008] The array radar detects whether the spectrum data and the array element original data meet the adaptive requirements;

[0009] When the spectrum data and the original array element data meet the adaptive requirements, the acquired spectrum data and the original array element data are reported to the simulation radar;

[0010] The simulated radar transmits the spectrum data and the original array element data to a road monitoring server, and the supervisor presents the spectrum data and the original array element data through a visualization chart of the associated monitoring error on the road monitoring server;

[0011] When the spectrum data and array element original data monitored by the array radar do not meet the adaptive requirements, the airborne radar is triggered, and the spectrum data and array element original data of the array elements not acquired by the array radar are acquired by the airborne radar and reported.

[0012] Further, the traffic road includes a first traffic road, a second traffic road and a third traffic road;

[0013] The traffic roads include intersections, straight roads and sharp turning roads;

[0014] The first traffic road is opposite to the second traffic road, and the second traffic road is opposite to the third traffic road;

[0015] The array radar is deployed at the intersection area of ​​the traffic road or mounted on an aircraft, and the airborne radar is deployed at the straight road area of ​​the traffic road;

[0016] The airborne radars include a first airborne radar, a second airborne radar, a third airborne radar, and a fourth airborne radar;

[0017] The first airborne radar is deployed in a straight road area where the first traffic road faces the second traffic road, and the second airborne radar is deployed in a straight road area where the second traffic road faces the first traffic road. The first airborne radar and the second airborne radar perform clutter-driven space-time spectrum estimation on the acquired data before reporting;

[0018] The third airborne radar is deployed in a straight road area of ​​the second traffic road facing the third traffic road, and the fourth airborne radar is deployed in a straight road area facing the second traffic road. The third airborne radar and the fourth airborne radar perform clutter-driven space-time spectrum estimation on the acquired data before reporting.

[0019] Furthermore, the array radar executes model-driven (preconfigured) and data-driven;

[0020] The airborne radar is data driven, and a driving master-slave queue is formed between the plurality of airborne radars;

[0021] The airborne radar has a monitor and a filter. The monitor signal emitted by the monitor is used to drive the array element to monitor the spectrum data and original data of the array element. The filter is used to perform signal filtering processing on the drive signal interacting between the airborne radar and the array radar to drive the array radar.

[0022] Furthermore, the array radar detects whether the spectrum data and the array element original data meet the adaptive requirements, specifically including:

[0023] After monitoring the spectrum data and the array element original data, the array radar collects a first array element ID set of the array element original data;

[0024] The array radar matches the first array element ID set with a full array element ID set of array element full information pre-reserved in a beamformer, and when the full array element ID set of array element full information in the beamformer and the first array element ID set monitored by the array radar meet the adaptation requirement, it is determined that the spectrum data and the array element original data meet the adaptation requirement;

[0025] When the full array element ID of the array element full amount information in the beamformer and the first array element ID monitored by the array radar do not meet the adaptation requirement, it is determined that the spectrum data and the array element original data do not meet the adaptation requirement.

[0026] Furthermore, when the spectrum data and the original array element data monitored by the array radar do not meet the adaptive requirements, the airborne radar is triggered, and the spectrum data and the original array element data of the array element not acquired by the array radar are acquired by the airborne radar and reported, including:

[0027] When the spectrum data and the original array element data monitored by the array radar do not meet the adaptive requirements, the array element is considered abnormal, and the array radar polls all airborne radars for amplitude error update data, and an airborne radar trigger instruction is configured in the polling instruction for the amplitude error update data;

[0028] The array radar obtains an abnormal array element ID set according to the array element information monitored by the main body and the information matching result in the beamformer, and transmits the abnormal array element ID set to all airborne radars;

[0029] After the airborne radar monitors the amplitude error update data polling instruction, the airborne radar changes from the standby state to the trigger state according to the airborne radar trigger instruction;

[0030] The airborne radar polls phase error update data in the signal area of ​​the main body, and the phase error update data is configured with a second array element trigger instruction;

[0031] The array element located in the signal area of ​​the airborne radar listens to the amplitude error update data instruction, triggers the data collection of the spectrum data and the array element original data of the array element body according to the second array element trigger instruction, obtains the spectrum data and the array element original data of the array element body, and the array element transmits the spectrum data and the array element original data back to the airborne radar;

[0032] The plurality of airborne radars respectively transmit the acquired array element spectrum data and array element original data to the array radar;

[0033] The array radar collects array elements transmitted by all airborne radars and matches the second array element ID set in the spectrum data and the array element original data with the abnormal array element ID set;

[0034] When the second array element ID set and the abnormal array element ID set meet the adaptive requirement, it is determined that the array element identification information meets the adaptive requirement; that is, if the first array element ID set belongs to the full array element ID set and the number of array elements in the first array element ID set meets the preset value, it is considered to be matched; otherwise, it is not matched, that is, the second array element ID set and the abnormal array element ID set do not meet the adaptive requirement;

[0035] When the second array element ID set and the abnormal array element ID set do not meet the adaptive requirement, an array element identification failure is determined, and a lost array element ID is reported.

[0036] According to a second aspect of the present invention, the present invention claims a space-time adaptive processing system under array element error conditions, applied to traffic roads, the system comprising: an array radar, an airborne radar, an array element, a simulation radar, a road monitoring server, and an error monitor;

[0037] Wherein, the array radar polls the space-time adaptive data in the signal area of ​​the body, and the space-time adaptive data is configured with the frequency of array element change;

[0038] The array element monitors the polling instruction of the space-time adaptive data, triggers the data collection of the spectrum data and the original data of the array element according to the change frequency of the array element, obtains the spectrum data and the original data of the array element, and transmits the spectrum data and the original data of the array element back to the array radar;

[0039] The array radar detects whether the spectrum data and the original data of the array element meet the adaptive requirements. When the spectrum data and the original data of the array element meet the adaptive requirements, the acquired spectrum data and the original data of the array element are reported to the simulation radar. When the spectrum data and the original data of the array element monitored by the array radar do not meet the adaptive requirements, the airborne radar is triggered, and the spectrum data and the original data of the array element not acquired by the array radar are acquired by the airborne radar and reported.

[0040] The road monitoring server monitors the spectrum data and array element original data transmitted by the simulated radar,

[0041] The visual chart on the error monitor is associated with the road monitoring server, presenting the spectrum data and array element raw data.

[0042] Further, the traffic road includes a first traffic road, a second traffic road and a third traffic road;

[0043] The traffic roads include intersections, straight roads and sharp turning roads;

[0044] The first traffic road is opposite to the second traffic road, and the second traffic road is opposite to the third traffic road;

[0045] The array radar is deployed at the intersection area of ​​the traffic road or mounted on an aircraft, and the airborne radar is deployed at the straight road area of ​​the traffic road;

[0046] The airborne radars include a first airborne radar, a second airborne radar, a third airborne radar, and a fourth airborne radar;

[0047] The first airborne radar is deployed in a straight road area of ​​the first traffic road facing the second traffic road, and the second airborne radar is deployed in a straight road area of ​​the second traffic road facing the first traffic road. The first airborne radar and the second airborne radar perform clutter-driven space-time spectrum, that is, perform clutter-driven space-time spectrum estimation on the acquired data;

[0048] The third airborne radar is deployed in a straight road area of ​​the second traffic road facing the third traffic road, and the fourth airborne radar is deployed in a straight road area facing the second traffic road. The third airborne radar and the fourth airborne radar perform clutter-driven space-time spectrum.

[0049] Furthermore, the array radar performs model-driven and data-driven operations;

[0050] The airborne radar is data driven, and a driving master-slave queue is formed between the plurality of airborne radars;

[0051] The airborne radar has a monitor and a filter. The monitor signal emitted by the monitor is used to drive the array element to monitor the spectrum data and original data of the array element. The filter is used to perform signal filtering processing on the drive signal interacting between the airborne radar and the array radar to drive the array radar and realize data driving of the array radar.

[0052] Furthermore, the array radar detects whether the spectrum data and the array element original data meet the adaptive requirements, specifically including:

[0053] After monitoring the spectrum data and the array element original data, the array radar collects a first array element ID set of the array element original data;

[0054] The array radar matches the first array element ID set with a full array element ID set of array element full information pre-reserved in a beamformer, and when the full array element ID set of array element full information in the beamformer and the first array element ID set monitored by the array radar meet the adaptation requirement, it is determined that the spectrum data and the array element original data meet the adaptation requirement;

[0055] When the full array element ID of the array element full amount information in the beamformer and the first array element ID monitored by the array radar do not meet the adaptation requirement, it is determined that the spectrum data and the array element original data do not meet the adaptation requirement.

[0056] Furthermore, when the spectrum data and the original array element data monitored by the array radar do not meet the adaptive requirements, the airborne radar is triggered, and the spectrum data and the original array element data of the array element not acquired by the array radar are acquired by the airborne radar and reported, including:

[0057] When the spectrum data and the original array element data monitored by the array radar do not meet the adaptive requirements, the array element is considered abnormal, and the array radar polls all airborne radars for amplitude error update data, and an airborne radar trigger instruction is configured in the polling instruction for the amplitude error update data;

[0058] The array radar obtains an abnormal array element ID set according to the array element information monitored by the main body and the information matching result in the beamformer, and transmits the abnormal array element ID set to all airborne radars;

[0059] After the airborne radar monitors the amplitude error update data polling instruction, the airborne radar changes from the standby state to the trigger state according to the airborne radar trigger instruction;

[0060] The airborne radar polls phase error update data in the signal area of ​​the main body, and the phase error update data is configured with a second array element trigger instruction;

[0061] The array element located in the signal area of ​​the airborne radar listens to the amplitude error update data instruction, triggers the data collection of the spectrum data and the array element original data of the array element body according to the second array element trigger instruction, obtains the spectrum data and the array element original data of the array element body, and the array element transmits the spectrum data and the array element original data back to the airborne radar;

[0062] The plurality of airborne radars respectively transmit the acquired array element spectrum data and array element original data to the array radar;

[0063] The array radar collects array elements transmitted by all airborne radars and matches the second array element ID set in the spectrum data and the array element original data with the abnormal array element ID set;

[0064] When the second array element ID set and the abnormal array element ID set meet the adaptive requirement, determining that the array element identification information meets the adaptive requirement;

[0065] When the second array element ID set and the abnormal array element ID set do not meet the adaptive requirement, an array element identification failure is determined, and a lost array element ID is reported.

[0066] In summary, the technical solution provided by this application brings at least the following beneficial effects:

[0067] This application adopts array radar and multiple airborne radars to achieve effective coverage of complex road conditions. This application adopts a clutter-driven method to achieve the space-time spectrum of a specific traffic road based on the deployed airborne radar; airborne radars are deployed around the array radars, and the airborne radars have data-driven functions; airborne radars and array radars use filters to achieve data-driven and data transmission; airborne radars provide data-driven services for areas where array radars cannot provide signals and other driving areas that need to be expanded; airborne radars and other airborne radars form a driving master-slave queue to achieve large-scale expansion of data-driven; the area of ​​airborne radar signals is driven by a listener, and a complete set of driving modes composed of array radars and airborne radars can achieve low-cost effective coverage of all road conditions. The driving power of array radars and airborne radars is much lower than that of current mobile driving radars, and they can also be powered by wind and solar clutter, without relying on the power system. Beidou satellites have global coverage and can be deployed over a large area at low cost. In addition, aircraft airborne radars can flexibly intervene in the areas covered by airborne radars to quickly build an urban road warning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 A flowchart of a space-time adaptive processing method in the case of an array element error as claimed in an embodiment of the present application;

[0069] Figure 2 A second working flow chart of a space-time adaptive processing method in the case of array element error claimed in an embodiment of the present application;

[0070] Figure 3 This is a structural diagram of a space-time adaptive processing system in the case of array element errors as claimed in an embodiment of the present application. DETAILED DESCRIPTION

[0071] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0072] The terms "first", "second" and "third" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second" and "third" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative regional relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0073] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various areas of the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0074] See attached Figure 1 According to the first embodiment of the present invention, the present invention claims protection for a space-time adaptive processing method under an array element error condition, which is applied to a traffic road, and the method specifically comprises:

[0075] The array radar polls the space-time adaptive data in the signal area of ​​the main body. In the polling instruction of the space-time adaptive data, the array element located in the signal area of ​​the array radar listens to the space-time adaptive data polling instruction, triggers the data collection of the spectrum data and the original data of the array element main body according to the frequency change of the array element, obtains the spectrum data and the original data of the array element main body, and the array element transmits the spectrum data and the original data of the array element back to the array radar;

[0076] The array radar detects whether the spectrum data and array element original data meet the adaptive requirements;

[0077] When the spectrum data and the original array element data meet the adaptive requirements, the acquired spectrum data and the original array element data are reported to the simulation radar;

[0078] The simulated radar transmits the spectrum data and the original array element data to the road monitoring server, and the supervisor presents the spectrum data and the original array element data through a visualization chart of the road monitoring server's associated monitoring errors;

[0079] When the spectrum data and array element original data monitored by the array radar do not meet the adaptive requirements, the airborne radar is triggered, and the airborne radar is used to obtain the spectrum data and array element original data of the array elements not obtained by the array radar and report them.

[0080] This embodiment installs an array radar at a high point on the road in the central area of ​​the city. The array radar has Beidou short message drive (wide area network drive) and data drive functions.

[0081] An airborne radar is installed on the slope around the array radar, and the airborne radar has a data-driven function; the airborne radar and the array radar use filters to achieve data-driven and data transmission; the airborne radar provides data-driven services for the driving areas (areas affected by road conditions) where the array radar cannot provide signals, and other driving areas that need to be expanded; the airborne radar and other airborne radars form a driving master-slave queue to achieve large-scale expansion of the data-driven area; when implementing urban monitoring, the array radar triggers all array elements and collects array data according to the set rules; detects and identifies the numbers of the array elements that have not been triggered, and the array radar transmits the numbers to the airborne radar; the airborne radar then triggers the untriggered array elements and collects array data; the airborne radar transmits the collected array element data to the array radar, and the array radar sends all data back to the Beidou short message radar listening end of the array radar to complete urban road status monitoring and data transmission.

[0082] The simulation radar uses synthetic aperture technology to monitor the data transmitted from the array radar and report it to the road monitoring server. The simulation radar block diagram includes a data reporting unit, a main control circuit unit and a Beidou short message information unit.

[0083] Specifically, the traffic roads include a first traffic road, a second traffic road and a third traffic road;

[0084] Traffic roads include intersections, straight roads and sharp turning roads;

[0085] The first traffic road is opposite to the second traffic road, and the second traffic road is opposite to the third traffic road;

[0086] Array radars are deployed at intersections of traffic roads or mounted on aircraft, and airborne radars are deployed at straight road areas of traffic roads;

[0087] The airborne radar includes a first airborne radar, a second airborne radar, a third airborne radar, and a fourth airborne radar;

[0088] The first airborne radar is deployed in a straight road area where the first traffic road faces the second traffic road, and the second airborne radar is deployed in a straight road area where the second traffic road faces the first traffic road, and the first airborne radar and the second airborne radar perform clutter-driven space-time spectrum;

[0089] The third airborne radar is deployed in a straight road area of ​​the second traffic road facing the third traffic road, and the fourth airborne radar is deployed in a straight road area facing the second traffic road. The third airborne radar and the fourth airborne radar perform clutter-driven space-time spectrum.

[0090] Specifically, the array radar implements model-driven and data-driven;

[0091] The airborne radar is data-driven, and a driving master-slave queue is formed between multiple airborne radars;

[0092] The airborne radar has a monitor and a filter. The monitor signal emitted by the monitor is used to drive the array element to monitor the spectrum data and original data of the array element. The filter is used to perform signal filtering processing on the drive signal interacting between the airborne radar and the array radar to drive the array radar.

[0093] Further, for this embodiment, due to the influence of road conditions, the central city radar cannot provide space-time spectrum on the sharp turn road near the central city radar, and due to the influence of complex road conditions, the central city radar cannot provide space-time spectrum in other complex road conditions (including sharp turn roads). The central city radar is set up at an intersection in the city center with relatively smooth road conditions, and the radar provides space-time spectrum to the surrounding area. The radar can provide a better space-time spectrum for the isolation belt of the opposite road. However, due to the influence of road conditions, it is difficult to achieve effective driving coverage on the sharp turn road on the side of the isolation belt of the road where the central city radar is located. This embodiment adopts a clutter driving mechanism. For the problem that the driving cannot be established on the sharp turn road on the side of the isolation belt of the road where the central city radar is located, an airborne radar is installed at the semi-straight road of the isolation belt of the opposite road to provide a space-time spectrum for the sharp turn road on this side, wherein the driving between the central city radar and the airborne radar adopts a directional driving mode to ensure the transmission distance and driving quality. The airborne radar uses a monitor for the space-time spectrum of the sharp turn road to obtain the maximum driving coverage. The first airborne radar, the second airborne radar, the third airborne radar and the fourth airborne radar form a clutter driving mode, so that a good driving space-time spectrum is provided under complex road conditions. At the same time, for more complex road conditions, the airborne radar relay mode can be used to expand the driving coverage range, and the signals between the airborne radars overlap each other. The airborne radars are installed oppositely on both sides of the sharp turn road, and the clutter driving space-time spectrum shown in the first airborne radar, the second airborne radar, the third airborne radar and the fourth airborne radar can still be achieved.

[0094] For the solution of this embodiment, refer to Figure 2 When the array radar is mounted on an aircraft, the method is configured as an aircraft-based monitoring application. Specifically, the operation logic of the application is as follows:

[0095] 1) The aircraft carries the airborne radar and flies over the city, triggering the array elements through the clutter block module;

[0096] 2) After the array element is triggered, the positioning function is started, the area information of the body is obtained and transmitted to the airborne radar through the clutter block module;

[0097] 3) The airborne radar transmits the collected array element area information to the simulation radar;

[0098] 4) The simulated radar reports array data to the distributed platform, and displays the current area of ​​the array element in a mobile phone visualization chart;

[0099] 5) For array elements that fail to trigger, the airborne radar will perform further search triggering and transmit the collected information to the central city radar.

[0100] Specifically, the array radar detects whether the spectrum data and the original data of the array element meet the adaptive requirements, including:

[0101] After monitoring the spectrum data and array element original data, the array radar collects the first array element ID set of the array element original data;

[0102] The array radar matches the first array element ID set with the full array element ID set of the full array element information pre-reserved in the beamformer. When the full array element ID set of the full array element information in the beamformer and the first array element ID set monitored by the array radar meet the adaptation requirement, it is determined that the spectrum data and the array element original data meet the adaptation requirement.

[0103] When the full array element ID of the full array element information in the beamformer and the first array element ID monitored by the array radar do not meet the adaptation requirement, it is determined that the spectrum data and the original array element data do not meet the adaptation requirement.

[0104] Specifically, when the spectrum data and array element original data monitored by the array radar do not meet the adaptive requirements, the airborne radar is triggered, and the spectrum data and array element original data of the array element not acquired by the array radar are acquired by the airborne radar and reported, including:

[0105] When the spectrum data and array element original data monitored by the array radar do not meet the adaptive requirements, the array element is considered abnormal, and the array radar polls all airborne radars for amplitude error update data. The airborne radar trigger command is configured in the polling command for amplitude error update data.

[0106] The array radar obtains the abnormal array element ID set based on the array element information monitored by the main body and the information in the beamformer, and transmits the abnormal array element ID set to all airborne radars;

[0107] After the airborne radar monitors the amplitude error update data, it changes from the standby state to the trigger state according to the airborne radar trigger command;

[0108] The airborne radar polls the phase error update data in the signal area of ​​the main body, and the phase error update data is configured with a second array element trigger instruction;

[0109] The array element located in the signal area of ​​the airborne radar monitors the amplitude error update data instruction, triggers the data collection of the spectrum data and the array element original data of the array element body according to the second array element trigger instruction, obtains the spectrum data and the array element original data of the array element body, and the array element transmits the spectrum data and the array element original data back to the airborne radar;

[0110] The multiple airborne radars respectively transmit the acquired array element spectrum data and array element original data to the array radar;

[0111] The array radar collects all array elements transmitted by the airborne radar and matches the second array element ID set in the spectrum data and the array element original data with the abnormal array element ID set;

[0112] When the second array element ID set and the abnormal array element ID set meet the adaptive requirement, it is determined that the array element identification information meets the adaptive requirement;

[0113] When the second array element ID set and the abnormal array element ID set do not meet the adaptive requirement, an array element identification failure is identified and a lost array element ID is reported.

[0114] The airborne radar is used to cooperate with the array radar to supplement the area that the fixed array radar cannot cover, and can flexibly build a clutter block network to achieve a wider coverage range.

[0115] When the airborne radar is working, it waits for the monitoring request signal of the array radar. After monitoring the monitoring request signal, before triggering the airborne radar, it first feeds back to the array radar that the status of the airborne radar is normal. Then, it triggers the airborne radar and searches for the array element ID of the abnormal array element of the array radar. When it is found after the first polling, the polling search result is recorded. When it is not found after the first polling, the polling search is performed again. When it is not found again, the polling search result is recorded and the search result is transmitted to the array radar.

[0116] According to this embodiment, when the array radar is mounted on an aircraft, in order to better perform targeted data processing on the functions of the array radar and better utilize the performance of the aircraft, the embodiment uses multiple aircraft to carry the array radar, and the multiple aircraft include: a first aircraft, a second aircraft, and a third aircraft;

[0117] The first aircraft is equipped with a command transmission module of the array radar, flies within the array radar signal area, and transmits a data monitoring request to the array elements within the range, and the array elements respond to the data monitoring request and wait for data transmission;

[0118] The second aircraft is equipped with an array radar data monitoring function module, and flies in the array radar signal area, uses a clutter block module to monitor the spectrum data and array element original data transmitted by the array element, and reports the monitored spectrum data and array element original data to the simulation radar, and then the simulation radar further reports the data to the road monitoring server, and the supervisor associates the monitoring error with the road monitoring server for operation and processing; when the spectrum data and array element original data monitored by the second aircraft do not meet the adaptive requirements, the array element is determined to be abnormal, and the second aircraft transmits the abnormal array element ID set to the third aircraft;

[0119] The third aircraft is equipped with a driving module of an array radar and an airborne radar. The third aircraft polls all airborne radars for amplitude error update data within a signal area of ​​the airborne radar. After the airborne radar monitors the amplitude error update data, it polls the signal area of ​​the main body for phase error update data. The array element located in the signal area of ​​the airborne radar monitors the amplitude error update data instruction, and triggers data collection of spectrum data and array element original data of the array element main body according to the second array element trigger instruction to obtain the spectrum data and array element original data of the array element main body. The array element transmits the spectrum data and array element original data to the The data are transmitted back to the airborne radar; the plurality of airborne radars respectively transmit the spectrum data and the original array element data obtained by the array elements to the third aircraft; the third aircraft collects the array elements transmitted by all the airborne radars and matches the second array element ID set in the spectrum data and the original array element data with the abnormal array element ID set; when the second array element ID set and the abnormal array element ID set meet the adaptive requirements, it is determined that the array element identification information meets the adaptive requirements; when the second array element ID set and the abnormal array element ID set do not meet the adaptive requirements, it is determined that the array element identification failure occurs, and the lost array element ID is reported to the simulation radar.

[0120] When the second and third aircrafts find the array elements, they take photos of the monitored livestock wearing the array elements and submit them for review; the aircrafts equipped with array radars fly flexibly and quickly over the city, and form a new wide area network-local area network drive network with the city's airborne radars, realizing flexible drive and large-scale expansion within the city.

[0121] According to a second aspect of the present invention, referring to Figure 3 The present invention claims a space-time adaptive processing system under array element error conditions, which is applied to traffic roads. The system includes: array radar, airborne radar, array element, simulation radar, road monitoring server, error monitor, wherein:

[0122] The array radar polls the space-time adaptive data in the signal area of ​​the main body, and the polling instruction of the space-time adaptive data is configured with the array element change frequency;

[0123] The array element monitors the polling instruction of the space-time adaptive data, triggers the data collection of the spectrum data and the original data of the array element according to the frequency of the array element change, obtains the spectrum data and the original data of the array element, and transmits the spectrum data and the original data of the array element back to the array radar;

[0124] The array radar detects whether the spectrum data and the original data of the array elements meet the adaptive requirements. When the spectrum data and the original data of the array elements meet the adaptive requirements, the acquired spectrum data and the original data of the array elements are reported to the simulation radar. When the spectrum data and the original data of the array elements monitored by the array radar do not meet the adaptive requirements, the airborne radar is triggered, and the airborne radar is used to acquire the spectrum data and the original data of the array elements that the array radar has not acquired and report them.

[0125] The road monitoring server monitors the spectrum data and array element original data transmitted by the simulated radar.

[0126] The visual chart on the error monitor is linked to the road monitoring server, presenting the spectrum data and array element raw data.

[0127] Specifically, the traffic roads include a first traffic road, a second traffic road and a third traffic road;

[0128] Traffic roads include intersections, straight roads and sharp turning roads;

[0129] The first traffic road is opposite to the second traffic road, and the second traffic road is opposite to the third traffic road;

[0130] Array radars are deployed at intersections of traffic roads, and airborne radars are deployed at straight road areas of traffic roads;

[0131] The airborne radar includes a first airborne radar, a second airborne radar, a third airborne radar, and a fourth airborne radar;

[0132] The first airborne radar is deployed in a straight road area where the first traffic road faces the second traffic road, and the second airborne radar is deployed in a straight road area where the second traffic road faces the first traffic road, and the first airborne radar and the second airborne radar perform clutter-driven space-time spectrum;

[0133] The third airborne radar is deployed in a straight road area of ​​the second traffic road facing the third traffic road, and the fourth airborne radar is deployed in a straight road area facing the second traffic road. The third airborne radar and the fourth airborne radar perform clutter-driven space-time spectrum.

[0134] Specifically, the array radar implements model-driven and data-driven;

[0135] The airborne radar is data-driven, and a driving master-slave queue is formed between multiple airborne radars;

[0136] The airborne radar has a monitor and a filter. The monitor signal emitted by the monitor is used to drive the array element to monitor the spectrum data and original data of the array element. The filter is used to perform signal filtering processing on the drive signal interacting between the airborne radar and the array radar to drive the array radar.

[0137] Specifically, the array radar detects whether the spectrum data and the original data of the array element meet the adaptive requirements, including:

[0138] After monitoring the spectrum data and array element original data, the array radar collects the first array element ID set of the array element original data;

[0139] The array radar matches the first array element ID set with the full array element ID set of the full array element information pre-reserved in the beamformer. When the full array element ID set of the full array element information in the beamformer and the first array element ID set monitored by the array radar meet the adaptation requirement, it is determined that the spectrum data and the array element original data meet the adaptation requirement.

[0140] When the full array element ID of the full array element information in the beamformer and the first array element ID monitored by the array radar do not meet the adaptation requirement, it is determined that the spectrum data and the original array element data do not meet the adaptation requirement.

[0141] Specifically, when the spectrum data and array element original data monitored by the array radar do not meet the adaptive requirements, the airborne radar is triggered, and the spectrum data and array element original data of the array element not acquired by the array radar are acquired by the airborne radar and reported, including:

[0142] When the spectrum data and array element original data monitored by the array radar do not meet the adaptive requirements, the array element is considered abnormal, and the array radar polls all airborne radars for amplitude error update data. The airborne radar trigger command is configured in the polling command for amplitude error update data.

[0143] The array radar obtains the abnormal array element ID set based on the array element information monitored by the main body and the information in the beamformer, and transmits the abnormal array element ID set to all airborne radars;

[0144] After the airborne radar monitors the amplitude error update data, it changes from the standby state to the trigger state according to the airborne radar trigger command;

[0145] The airborne radar polls the phase error update data in the signal area of ​​the main body, and the phase error update data is configured with a second array element trigger instruction;

[0146] The array element located in the signal area of ​​the airborne radar monitors the amplitude error update data instruction, triggers the data collection of the spectrum data and the array element original data of the array element body according to the second array element trigger instruction, obtains the spectrum data and the array element original data of the array element body, and the array element transmits the spectrum data and the array element original data back to the airborne radar;

[0147] The multiple airborne radars respectively transmit the acquired array element spectrum data and array element original data to the array radar;

[0148] The array radar collects all array elements transmitted by the airborne radar and matches the second array element ID set in the spectrum data and the array element original data with the abnormal array element ID set;

[0149] When the second array element ID set and the abnormal array element ID set meet the adaptive requirement, it is determined that the array element identification information meets the adaptive requirement;

[0150] When the second array element ID set and the abnormal array element ID set do not meet the adaptive requirement, an array element identification failure is identified and a lost array element ID is reported.

[0151] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or drive association presented or discussed can be an indirect coupling or drive association through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0152] In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of software functional units. The above is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of this application, or directly or indirectly used in other related technical fields, is also included in the patent protection scope of the present application.

[0153] The specific implementation methods of the invention are described in detail above, but they are only examples, and the present application is not limited to the specific implementation methods described above. For those skilled in the art, any equivalent modification or substitution of the invention is also within the scope of the present application, and therefore, the equalization, modification, and improvement made without departing from the spirit and principle of the present application should be included in the scope of the present application.

Claims

1. A space-time adaptive processing method under array element error conditions, applied to traffic roads, characterized in that: include: The array radar polls the space-time adaptive data in the signal area of ​​the main body, and the polling instruction of the space-time adaptive data is configured with the array element change frequency; The array element located in the array radar signal area listens to the polling instruction of the space-time adaptive data, triggers the data collection of the spectrum data and the array element original data of the array element body according to the array element change frequency carried in the polling instruction, obtains the spectrum data and the array element original data of the array element body, and the array element transmits the spectrum data and the array element original data back to the array radar; The array radar detects whether the spectrum data and the array element original data meet the adaptive requirements; When the spectrum data and the original array element data meet the adaptive requirements, the acquired spectrum data and the original array element data are reported to the simulation radar; The simulated radar transmits the spectrum data and the original array element data to a road monitoring server, and the supervisor presents the spectrum data and the original array element data through a visualization chart of the associated monitoring error on the road monitoring server; When the spectrum data and array element original data monitored by the array radar do not meet the adaptive requirements, the airborne radar is triggered, and the spectrum data and array element original data of the array element not acquired by the array radar are acquired by the airborne radar and reported; The array radar detects whether the spectrum data and the array element original data meet the adaptive requirements, specifically including: After monitoring the spectrum data and the array element original data, the array radar collects a first array element ID set of the array element original data; The array radar matches the first array element ID set with a full array element ID set of array element full information pre-reserved in a beamformer, and when the full array element ID set of array element full information in the beamformer and the first array element ID set monitored by the array radar meet the adaptation requirement, it is determined that the spectrum data and the array element original data meet the adaptation requirement; When the full array element ID of the array element full amount information in the beamformer and the first array element ID monitored by the array radar do not meet the adaptation requirement, it is determined that the spectrum data and the array element original data do not meet the adaptation requirement.

2. The space-time adaptive processing method in the case of array element error according to claim 1, characterized in that: include: The traffic roads include a first traffic road, a second traffic road and a third traffic road; The traffic roads include intersections, straight roads and sharp turning roads; The first traffic road is opposite to the second traffic road, and the second traffic road is opposite to the third traffic road; The array radar is deployed at the intersection area of ​​the traffic road or mounted on an aircraft, and the airborne radar is deployed at the straight road area of ​​the traffic road; The airborne radars include a first airborne radar, a second airborne radar, a third airborne radar, and a fourth airborne radar; The first airborne radar is deployed in a straight road area where the first traffic road faces the second traffic road, and the second airborne radar is deployed in a straight road area where the second traffic road faces the first traffic road, and the first airborne radar and the second airborne radar perform clutter-driven space-time spectrum estimation on acquired data; The third airborne radar is deployed in a straight road area of ​​the second traffic road facing the third traffic road, and the fourth airborne radar is deployed in a straight road area facing the second traffic road. The third airborne radar and the fourth airborne radar perform clutter-driven space-time spectrum estimation on the acquired data.

3. The space-time adaptive processing method in the case of array element error according to claim 1, characterized in that: include: The array radar performs model-driven and data-driven operations; The airborne radar is data driven, and a driving master-slave queue is formed between the plurality of airborne radars; The airborne radar has a monitor and a filter. The monitor is used to monitor the spectrum data and original data of the array element. The filter is used to perform signal filtering processing on the driving signal interacting between the airborne radar and the array radar to drive the array radar.

4. The space-time adaptive processing method in the case of array element error according to claim 1, characterized in that: When the spectrum data and array element original data monitored by the array radar do not meet the adaptive requirements, the airborne radar is triggered, and the spectrum data and array element original data of the array element not acquired by the array radar are acquired by the airborne radar and reported, including: When the spectrum data and the original array element data monitored by the array radar do not meet the adaptive requirements, the array element is considered abnormal, and the array radar polls all airborne radars for amplitude error update data, and an airborne radar trigger instruction is configured in the polling instruction for the amplitude error update data; The array radar obtains an abnormal array element ID set according to the matching result of the array element information monitored by the main body and the full array element information in the beamformer, and transmits the abnormal array element ID set to all airborne radars; wherein the array element information refers to all array element original data received by the array radar; After the airborne radar monitors the amplitude error update data polling instruction, the airborne radar changes from the standby state to the trigger state according to the airborne radar trigger instruction; The airborne radar polls phase error update data in the signal area of ​​the main body, and the polling instruction of the phase error update data is configured with a second array element trigger instruction; The array element located in the signal area of ​​the airborne radar listens to the polling instruction of the amplitude error update data, triggers the data collection of the spectrum data and the array element original data of the array element body according to the second array element trigger instruction, obtains the spectrum data and the array element original data of the array element body, and the array element transmits the spectrum data and the array element original data back to the airborne radar; The plurality of airborne radars respectively transmit the acquired spectrum data and original data of the array elements to the array radar; After monitoring the spectrum data and original array element data of all airborne radars, the array radar collects a second array element ID set of the original array element data and matches it with the abnormal array element ID set; When the second array element ID set and the abnormal array element ID set meet the adaptive requirement, determining that the array element identification information meets the adaptive requirement; When the second array element ID set and the abnormal array element ID set do not meet the adaptive requirement, an array element identification failure is determined, and a lost array element ID is reported.

5. A space-time adaptive processing system under array element error conditions, applied to traffic roads, the system comprising: Array radar, airborne radar, array element, simulation radar, road monitoring server, error monitor, characterized in that it includes: The array radar polls the space-time adaptive data in the signal area of ​​the main body, and the polling instruction of the space-time adaptive data is configured with the array element change frequency; The array element monitors the polling instruction of the space-time adaptive data, triggers the data collection of the spectrum data and the original data of the array element according to the change frequency of the array element, obtains the spectrum data and the original data of the array element, and transmits the spectrum data and the original data of the array element back to the array radar; The array radar detects whether the spectrum data and the original data of the array element meet the adaptive requirements. When the spectrum data and the original data of the array element meet the adaptive requirements, the acquired spectrum data and the original data of the array element are reported to the simulation radar. When the spectrum data and the original data of the array element monitored by the array radar do not meet the adaptive requirements, the airborne radar is triggered, and the spectrum data and the original data of the array element not acquired by the array radar are acquired by the airborne radar and reported. The road monitoring server monitors the spectrum data and array element original data transmitted by the simulated radar, The visual chart on the error monitor is associated with the road monitoring server to present the spectrum data and array element raw data; The array radar detects whether the spectrum data and the array element original data meet the adaptive requirements, specifically including: After monitoring the spectrum data and the array element original data, the array radar collects a first array element ID set of the array element original data; The array radar matches the first array element ID set with a full array element ID set of array element full information pre-reserved in a beamformer, and when the full array element ID set of array element full information in the beamformer and the first array element ID set monitored by the array radar meet the adaptation requirement, it is determined that the spectrum data and the array element original data meet the adaptation requirement; When the full array element ID of the array element full amount information in the beamformer and the first array element ID monitored by the array radar do not meet the adaptation requirement, it is determined that the spectrum data and the array element original data do not meet the adaptation requirement.

6. The space-time adaptive processing system in the case of array element error as claimed in claim 5, characterized in that: include: The traffic roads include a first traffic road, a second traffic road and a third traffic road; The traffic roads include intersections, straight roads and sharp turning roads; The first traffic road is opposite to the second traffic road, and the second traffic road is opposite to the third traffic road; The array radar is deployed at the intersection area of ​​the traffic road or mounted on an aircraft, and the airborne radar is deployed at the straight road area of ​​the traffic road; The airborne radars include a first airborne radar, a second airborne radar, a third airborne radar, and a fourth airborne radar; The first airborne radar is deployed in a straight road area where the first traffic road faces the second traffic road, and the second airborne radar is deployed in a straight road area where the second traffic road faces the first traffic road, and the first airborne radar and the second airborne radar perform clutter-driven space-time spectrum estimation on the acquired data and then report them; The third airborne radar is deployed in a straight road area of ​​the second traffic road facing the third traffic road, and the fourth airborne radar is deployed in a straight road area facing the second traffic road. The third airborne radar and the fourth airborne radar perform clutter-driven space-time spectrum estimation on the acquired data and then report it.

7. The space-time adaptive processing system in the case of array element error as claimed in claim 6, characterized in that: include: The array radar performs model-driven and data-driven operations; The airborne radar is data driven, and a driving master-slave queue is formed between the plurality of airborne radars; The airborne radar has a monitor and a filter. The monitor is used to monitor the spectrum data and original data of the array element. The filter is used to perform signal filtering processing on the driving signal interacting between the airborne radar and the array radar to drive the array radar.

8. The space-time adaptive processing system in the case of array element error as claimed in claim 5, characterized in that: include: When the spectrum data and the original array element data monitored by the array radar do not meet the adaptive requirements, the airborne radar is triggered, and the spectrum data and the original array element data of the array element not acquired by the array radar are acquired by the airborne radar and reported, including: When the spectrum data and the original array element data monitored by the array radar do not meet the adaptive requirements, the array element is considered abnormal, and the array radar polls all airborne radars for amplitude error update data, and an airborne radar trigger instruction is configured in the polling instruction for the amplitude error update data; The array radar obtains an abnormal array element ID set according to the array element information monitored by the main body and the information matching result in the beamformer, and transmits the abnormal array element ID set to all airborne radars; After the airborne radar monitors the amplitude error update data polling instruction, the airborne radar changes from the standby state to the trigger state according to the airborne radar trigger instruction; The airborne radar polls phase error update data in the signal area of ​​the main body, and the phase error update data is configured with a second array element trigger instruction; The array element located in the signal area of ​​the airborne radar listens to the amplitude error update data instruction, triggers the data collection of the spectrum data and the array element original data of the array element body according to the second array element trigger instruction, obtains the spectrum data and the array element original data of the array element body, and the array element transmits the spectrum data and the array element original data back to the airborne radar; The plurality of airborne radars respectively transmit the acquired array element spectrum data and array element original data to the array radar; The array radar collects array elements transmitted by all airborne radars and matches the second array element ID set in the spectrum data and the array element original data with the abnormal array element ID set; When the second array element ID set and the abnormal array element ID set meet the adaptive requirement, determining that the array element identification information meets the adaptive requirement; When the second array element ID set and the abnormal array element ID set do not meet the adaptive requirement, an array element identification failure is determined, and a lost array element ID is reported.

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